HAL_HCD_HC_GetXferCount wring behavior in case OUT transactions, non-DMA
Then I use HAL_HCD_HC_GetXferCount (trough default implementation in USBH_LL_GetLastXferSize) for out pipes after successful complete USBH_BulkSendData and USBH_LL_GetURBState) - transferred size is zero for non-empty transfers.my case:STM32F746, USB...